[Upgraded Version] RV Fresh Water Pump, 12V DC 6GPM 70PSI Self-Priming Diaphragm With Pressure Switch and Strainer for RV, Marine, Yacht, Caravan

We are now full time RV, living on the back of our daughter’s property. We have power and water but no way to access the septic from where we are set up. This macerator works great for transferring from the black water tank into the tote tank that we put into the back of the gator (so the tote tank is actually higher than the outlet for the BW tank). Then we drive the gator up to the house and again use the macerator pump to transfer the waste into the septic system. Great cost effective solution.

Bought this to upgrade my RV water pump as the one stock was very noisy and very low pressure. This one works great. Remember you may need to change the fuse to for the higher voltage. I believe it takes a 20. My old one took a 15. I blew the 15.

I was sceptical of this pumps ability to handle our four 40+ gal waste tanks on our fifth wheel camper. I was pleasantly surprised when it pumped 140 gal of waste water without overheating and tripping the internal thermal switch. Also, much quieter than expected. I would agree that the cable connection for the battery is short. Was able to use a 20' camco sewer hose to reach the pump which needed to be towards the front of the campers battery compartment. I did have a problem with the switch spring failing after first use. However, it was easily fixed by unscrewing the switch and repositioning the spring.

I just received the pump, just in time since I had 2 full RV tanks to pump.At first glance, pump seemed well made. Easy to install the clear tube and hose.Pump did it's job well, not as fast as claimed, but got the job done.I liked that it's quiet. It took about 15 minutes to empty a 40 gal tank, but I did run it 200 ft with an elevation of about 2 ft higher than the RV, so not much at all.I also didn't use the prescribed 3/4 hose, I used a 5/8" hose.The bad:The electric cord at 7ft is way short. With my truck parked next to the slide and door open, the cord was way too short to reach the lighter.I HAD to use the alligator clips directly from the battery. If I was at a campground with limited access, this would not work.I will keep the pump as it sealed well, did the job and was easy to clean.I'll splice in an extra 10 - 15ft of wire as I am comfortable doing it. If you are not, this might be a deal breaker. No use having a pump if it's a pain to get power to it...TIP: Fill some water in the tub or Grey tank to flush with once the black tank is empty.

I've only had occasion to use it one time, but it pumped out a full black water and grey water tank (over 100gal) with no issues. Allowed me to empty the motorhome tanks in my yard extending the use of my motorhome as a "guest house" to give visitors their own space without having to drive it out to a dump station during their stay.

WOW all I can say got rid of my boat OLD fresh water pump Nice upgrade great pressure and volume.

I'm living off grid and have been using a portable waste tank that I haul to a dump station in town about once a week. At almost 300 pounds when full my son and I could lift it up into the truck, bit it was a chore. Eventually I got some ramps and a drill powered winch so I could load it into the truck by myself. This was much easier, but I was getting tired of running to the dump station so often.I picked up this pump on the advice of some others living off grid and I'm sold. Very simple to set up. I run a hose to a 275 gallon IBC tote and when it's full, I'll have a septic company come out and pump it. It will cost a bit, but the convenience and my time saved makes it worth while.The pump appears to be well made, works reasonably fast. I didn't experience any leaks and when my tank is empty, it's super easy to clean - just open the water inlet valve to clean it and flush out the hose.

I decided to bench-test it before installing it permanently. Coupe of buckets, some hoses and a pressure tank with a pressure gauge. It's REALLY nice and quiet, as long as there are no leaks in the suction. Mine had an air leak in the filter/strainer. I was able to stop the after a couple of tries. I do like how quiet it ran after that, so I hope I can make it work.The instructions are very poorly written. There is a pressure cutoff screw to adjust the pressure switch, and it seems to work ok... kind of (I was trying to set mine on 58 psi), and had some limited success, but the shutoff would only happen after a lot of pump chatter as the set point pressure was reached. The instructions seem to conflate this switch with the bypass screw (which must adjust a pop-off valve of some sort... no mention of how that is supposed to work, other than "The pressure gauge pointe jitter (sic) instantaneous data is shutoff-by-pass pressure". I've written and read a lot of technical stuff, but am not sure what that is supposed to mean.As to the bypass screw: Mine was threaded in at an angle (it's a stainless steel allen set screw about 3/4", takes a 5/16" allen wrench, not the 7/16 wrench the instructions describe), and did not seem to reliably adjust much of anything. Instructions say to remove it completely and screw it in 10 to 11.5 turns clockwise. The pump chatters as it reaches the setpoint pressure (58 psig in my case). What I wanted was the bypass to kick-in at about 65 psi (ie; never unless the cutoff pressure switch fails). Coudn't do it. I would presume this can be done by setting the pressure cutoff switch to a higher pressure than desired, adjusting the bypass to open at that pressure, then back off the pressure cutoff switch to the desired pressure. None of this is obvious from the instructions (they just say "unscrew it completely, then screw it in about 10 1/2 turns) Nothing about how it works. or how to set it dynamically.OK, maybe I am missing something, but since I am a pretty handy guy, I figured that with a little advice from Customer Service, I could make this work, maybe even fix whatever seems to be wrong with this pump. Called Customer Service at 11:00am this morning. Guess what I got? "Customer Service is not available at this time. Please leave a message at the tone". So I did. Never heard back. If I don't hear back before I get a replacement pump in two days, I am going to send this thing back. I will update later either way.Update two days later. Was never able to get in contact with customer service. I have a time constraint, so I did something I shouldn’t have had to do: I McGivered the bypass valve by removing its cover and shimming the screw to ensure that the bypass pressure would exceed the set point pressure. It worked. Pump ran smoothly and quietly during the bench test, so I went ahead and installed it.